$(info "enter")
ifneq ($(KERNELRELEASE),)
$(info "1st")
obj-m := hello.o
else
$(info "2st")
KERNELDIR ?= /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
all:
	$(info "3st")
	make -C $(KERNELDIR) M=$(PWD) modules
clean:
	$(info "4st")
	rm -f *.ko *.o *.mod *.mod.o *.symvers *.mod.c *.order
endif
$(info "exit")
